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/* $Id: ns87303.h,v 1.2 1998/09/13 15:38:50 ecd Exp $
* ns87303.h: Configuration Register Description for the
* National Semiconductor PC87303 (SuperIO).
*
* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
*/
#ifndef _SPARC_NS87303_H
#define _SPARC_NS87303_H 1
/*
* Controll Register Index Values
*/
#define FER 0x00
#define FAR 0x01
#define PTR 0x02
#define FCR 0x03
#define PCR 0x04
#define KRR 0x05
#define PMC 0x06
#define TUP 0x07
#define SID 0x08
#define ASC 0x09
#define CS0CF0 0x0a
#define CS0CF1 0x0b
#define CS1CF0 0x0c
#define CS1CF1 0x0d
/* Function Enable Register (FER) bits */
#define FER_EDM 0x10 /* Encoded Drive and Motor pin information */
/* Function Address Register (FAR) bits */
#define FAR_LPT_MASK 0x03
#define FAR_LPTB 0x00
#define FAR_LPTA 0x01
#define FAR_LPTC 0x02
/* Power and Test Register (PTR) bits */
#define PTR_LPTB_IRQ7 0x08
#define PTR_LEVEL_IRQ 0x80 /* When not ECP/EPP: Use level IRQ */
#define PTR_LPT_REG_DIR 0x80 /* When ECP/EPP: LPT CTR controlls direction */
/* of the parallel port */
/* Function Control Register (FCR) bits */
#define FCR_LDE 0x10 /* Logical Drive Exchange */
#define FCR_ZWS_ENA 0x20 /* Enable short host read/write in ECP/EPP */
/* Printer Controll Register (PCR) bits */
#define PCR_EPP_ENABLE 0x01
#define PCR_EPP_IEEE 0x02 /* Enable EPP Version 1.9 (IEEE 1284) */
#define PCR_ECP_ENABLE 0x04
#define PCR_ECP_CLK_ENA 0x08 /* If 0 ECP Clock is stopped on Power down */
#define PCR_IRQ_POLAR 0x20 /* If 0 IRQ is level high or negative pulse, */
/* if 1 polarity is inverted */
#define PCR_IRQ_ODRAIN 0x40 /* If 1, IRQ is open drain */
/* Tape UARTs and Parallel Port Config Register (TUP) bits */
#define TUP_EPP_TIMO 0x02 /* Enable EPP timeout IRQ */
/* Advanced SuperIO Config Register (ASC) bits */
#define ASC_LPT_IRQ7 0x01 /* Allways use IRQ7 for LPT */
#define ASC_DRV2_SEL 0x02 /* Logical Drive Exchange controlled by TDR */
#ifdef __KERNEL__
#include <asm/system.h>
#include <asm/io.h>
static __inline__ void ns87303_writeb(unsigned long port, int index,
unsigned char value)
{
unsigned long flags;
save_flags(flags); cli();
outb(index, port);
outb(value, port + 1);
outb(value, port + 1);
restore_flags(flags);
}
static __inline__ unsigned char ns87303_readb(unsigned long port, int index)
{
outb(index, port);
return inb(port + 1);
}
#endif /* __KERNEL__ */
#endif /* !(_SPARC_NS87303_H) */
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